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Research on the type and occurrence mechanism and prevention of coal pillar rockbursts [PDF]
, 2023 Coal pillar rockburst is a typical type of rockburst occurring in coal mining in China in recent years. How to summarize the engineering scale damage characteristics of coal pillar rockburst, reveal the mechanism of rockburst instability and formulate ...
Xiufeng ZHANG, Yang CHEN
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Using metapopulation theory for practical conservation of mangrove endemic birds
Conservation Biology, Volume 34, Issue 1, Page 266-275, February 2020., 2020 Abstract As a landscape becomes increasingly fragmented through habitat loss, the individual patches become smaller and more isolated and thus less likely to sustain a local population. Metapopulation theory is appropriate for analyzing fragmented landscapes because it combines empirical landscape features with species‐specific information to produce ...
Ryan Huang, Stuart L. Pimm, Chandra Giri
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Jianzhu Gangjiegou Jinzhan, 2023 为研究带PEC端柱混凝土剪力墙的抗震性能，对两片相同的带PEC端柱混凝土剪力墙试件进行了低周反复荷载试验研究。对试件的破坏现象、滞回曲线、骨架曲线、耗能能力、应变变化规律和承载力进行分析，并研究了轴压比的影响，结果表明：带PEC端柱混凝土剪力墙试件具有较高的承载能力和耗能能力，延性系数达到4.84~5.16，表现出良好的抗倒塌能力；随着试验轴压比的增大，试件的极限承载力有些许提高，但延性降低。按现行《组合结构设计规范》（JGJ 138—2016）中相关公式计算的承载力与试验值吻合较好 ...
李奉阁, 陈玥, 赵根田
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以水环境承载能力为基础的我国海岸带水环境管理制度体系设计 [PDF]
, 2018 落实生态文明、陆海统筹的战略离不开合理的海岸带水环境管理顶层设计。本文针对中国海岸带水环境管理构建了一套制度安排。这套制度安排以最新国家级规划和部委规章为基本政策依据,以资源环境承载力预警机制为核心内容,以满足水体的流动性及河海的连通性为基本原则,具备较强的科学性和可操作性 ...
毛竹, 薛雄志
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Jianzhu Gangjiegou Jinzhan, 2023 以荷载作用方向、截面类型、肢高宽比为参数，进行了4根组合L形冷弯钢管混凝土柱的拟静力试验，分析了各参数对试件破坏形态、承载力、延性及耗能等抗震指标的影响。并应用ABAQUS有限元软件建立了数值分析模型，分析了钢管厚度、轴压比等参数对试件承载力和延性影响。结果表明：试件的主要破坏模式为钢管鼓曲开裂，异形钢管的制作方式对试件破坏形态有一定影响，冷弯钢管组合焊接的试件未出现角部开裂，钢板组合焊接的试件出现角部纵向焊缝开裂现象，加快了试件的变形发展；荷载作用方向对试件延性和耗能能力影响不大 ...
王逸伦, 杨锋
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Bearing performance of wallboards in an electrostatic precipitator casing in consideration of stressed skin effect [PDF]
, 2016 For a wallboard in an electrostatic precipitator casing playing stressed skin effect under vertical uniform pressure on the top, the failure mode and bearing capacity were investigated by nonlinear finite element method.
PAN Li-cheng +5 more
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Dianci bileiqi, 2022 为研究大直径复合绝缘子承载力特性及法兰胶装节点破坏过程，建立基于内聚力材料模型(CZM)的复合支柱绝缘子法兰胶装节点精细化有限元模型，模拟法兰节点区域在弯矩荷载作用下的破坏，并分析结构参数对大直径复合绝缘子承载能力的影响。分析结果表明，大直径复合绝缘子承载过程分为套管线性承载阶段和法兰节点非线性承载阶段，胶装节点脱粘破坏后，复合套管有竖直向上滑移的趋势，胶装处裂缝宽度为4.13 mm。大直径复合绝缘子线性阶段极限承载力35.1 kN,粘结层完全破坏时极限承载力为46.5 kN ...
张若愚, 曹枚根, 李惠庸
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Damage characteristics and mechanical properties of superhigh-water material consolidated body under triaxial stress [PDF]
, 2022 In order to study the damage characteristics of superhigh-wate consolidated body under triaxial stress state, uniaxial experiments of superhigh-water consolidated body under different curing time (1, 7, 14, 21, 28 d) were carried out.
Fangtian WANG +4 more
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Chinese Local Government Fiscal Spending and Environment Pollution under the Fiscal Decentralization [PDF]
, 2016 近四十年的改革开放在带来经济高速增长同时还有日益严重的环境质量问题。环境污染不仅仅危害居民的身体健康，更是直接威胁着经济的可持续发展。随着资源和环境压力的日趋凸显，经济结构转型和可持续发展受到严峻的现实冲击。政治集权和经济分权形成的特色财政分权体制是我国经济体制的重要组成部分，是公认的促进经济快速发展的主要制度之一。 目前研究相关制度对环境质量的影响成为环境污染问题的重要分支。因此，本文试图探寻特色的财政分权下中国地方政府的支出行为包括规模和结构如何对环境污染产生影响，并在此结论上提出相关政策建议 ...
杨惠珍
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Designing Integrated Policies for the Twin Transition: Challenges and Tradeoffs
Policy Studies Journal, EarlyView.ABSTRACT Democratic governance faces the intertwined imperatives of managing the transformative risks and opportunities of digitalization, particularly stemming from artificial intelligence (AI), while achieving environmental sustainability within planetary boundaries.
Martino Maggetti
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